Grinding-mill.



lie-812,250. PATENTED FEB. 13, 1906. J. s. wooncocx.

GRINDING MILL.

APPLICATION FILED JULY 13, 1906.

I ((Ig/ INVENTOR JJMEJ (loccldock BY O ATTORNEYS UNITED STATES PATENTOFFICE.

GRINDING-MILL.

Specification of Letters Patent.

Patented Feb. 13, 1906.

Application filed July 13, 1905. Serial No. 269,487.

To all whom it may concern:

Be it known that I, JAMEs S. WooDoooK, a citizen of the United States,residing at New Lexington, in the county of Perry and State of Ohio,have invented certain new and useful Improvements in Grinding-Mills, ofwhich the following is a specification.

My invention relates to new and useful improvements in grinding-mills.

The object of the invention is to provide certain improvements in theconstruction of the grinding-mill patented byme May 1,1888, andnumbered382,202, the more essential improvements relating to the simplificationof certain parts of the mill whereby the same may be more readily andexpeditiously taken apart and assembled. Among these improvements arethe brace for supporting the spindle and the leg-attaching means.

Finally, the object of the invention is to provide a device of thecharacter described that will be strong, durable, and efficient andsimple and comparatively inexpensive to produce.

With the above and other objects in view the invention consists of thenovel'details of construction and operation, a preferable embodiment ofwhich is described in the specification and illustrated in theaccompanying drawings, wherein Figure 1 is a vertical sectional view ofmy improved mill, a portion of the hopper being broken away; and Fig. 2is a horizontal crosssectional view taken on the line as w of Fig. 1.

In general appearance my improved mill is quite similar to the one shownin the patent hereinbefore mentioned, the more marked differencesresiding in the specific construction of certain parts.

In the drawings the numeral 1 designates the outer casing having agrooved upper end, on which rests the usual sweep or breaker ring 2,which supports the inwardly and upwardly curved arms 3. The arms 8, ofwhich there may be any number, merge into and support at the center ofthe mill a hub or clutch member 4, throu h which extends a bearing-boss5, connected to the hub 4, so as to be turned-thereby when motion isimparted to the sweep-ring. The boss 5 is formed at the center of thegrinding-cone 6, which is disposed beneath a corresponding grindingcone7, surrounding the boss. The cone 6 is formed with an annular flangedring 8, on the flanged portion of which rests an inner annular burmember 9 in such a position as to be readily lifted ofi thering-support. The casing 1 is supported on a trough or base ring 10,which also supports an outer annular bur member 11 in juxtaposition tothe inner bur member 9, as clearly shown in Fig. 1. The troughring 10 isformed with an annular trough 12, in which is arranged a conveyer 13 ofthe usual construction. On the inner lower portion of the inner burmember 9 cppositely-disposed projections or webs 14 are provided andengaged with the wings 13 of the conveyer 13, so as to move the same inthe trough. The cone 6 is supported on the upper end of the spindle 15,which at its lower endis supported in a suitable bearing-box 16,arranged inthe central portion of the usual bridge-tree 17. The spindleis held in position by an upwardly-bent brace 18, secured at its ends tothe trough-ring 10. This brace not only serves to keep the spindle inplace when the parts are assembled, but acts as a means for positioningthe spindle when the mill is being put'together; it being apparent thatthe entire upper structure may be lifted off or placed on the ring 10without displacing the spindle.

For supporting the mill lugs 19 are extend ed laterally from the ring 10and suitable legs 20 are secured to the under sides of the legs by bolts21. Through one of the lugs a bolt 22 is passed, supporting at its lowerend one end of the bridge-tree 17, while a lug 23, extended from theopposite side of the ring, supports a bolt and wing nut 24, connected tothe opposite end of the bridge-tree, by which the same may be adjustedin the usual manner.

It will be observed that by disconnecting the casing 1 from the base ortrough ring 10 the outer and upper parts of the mill may be readilylifted off and access to the interior had and this accomplished withoutdisturbing the spindle 15, which is supported in position by the bracket18. In my former patent it is nec'essery to invert the mill in order toobtain access to most of the parts.

Having now fully described my invention, what I claim, and desire tosecure by Letters Patent, is

1. In a grinding-mill, the combination with the base-ring, its supports,the bridge-tree and the spindle, of means fixedly supported at each endby the base-ring and engaging with the spindle for holding the same inplace.

2. In a grinding-mill, a base-ring having a trough formed thereinprovided with legengaging lugs, and legs secured to the lugs, and adetachable outer casing secured to the basering independently of thelugs andthe legs,

3. In a grinding-mill, a base-ring formed with a trough provided withlaterally-projecting lugs, and a bridge-tree supported from the lugs andhaving adjustable connection with one of said lugs.

4. In agrinding-mill, the combination with a base-ring formed with atrough, supports for the ring and a spindle supported within the ring,of bracing means for the spindle engaging about the same and extendingacross the base-ring. I

5. In agrinding-mill, the combination with a base-ring formed with atrough, a conveyer mounted in the trough and a spindle supported withinthe ring, of a grinding member rotatably mounted on the upper end of thespindle and provided with aprojecting flange,

.jections adapted to engage the conveyer to impart motion thereto.

6. Ina grinding-mill, a base-ring having laterally-extending lugs, anouter casing detachably supported on the upper side of the base-ring andindependently of the lugs, and legs detachably secured to the lugsindependently of the casing, in combination with a spindle supportedWithin the base-ring, and a grinding-cone supported on the upper end ofthe spindle.

In testimony whereof I afliX my signature in presence of two witnesses.

JAMES S. I/VOODOOCK. Witnesses: I

J. O. NEwLoN, H. F. ACKER.

